remove (*) marker from sqlite backend table. No idea what it means.

Author: rouilj

doc/installation.txt

@@ -586,7 +586,7 @@ There's several to choose from, each with benefits and limitations:
 Name       Speed       Users   Support
 ========== =========== ===== ==============================
 anydbm     Slowest     Few   Always available
-sqlite     Fastest(*)  Few   May need install (PySQLite_)
+sqlite     Fastest     Few   Always available
 postgresql Fast        Many  Needs install/admin (psycopg2_)
 mysql      Fast        Many  Needs install/admin (MySQLdb_)
 ========== =========== ===== ==============================